1. 11x+9=-7
-9 -9
11x=-16
/11 /11
x= -16/11

2. 2x-8-6x=90
2x-6x=-4x
-4x-8=90
+8 +8
-4x=98
/-4 /-4
x=-24.5

3. 5(3x-4)=x+6+12x
15x-20=13x+6
-13x. -13x
2x-20=6
+20. +20
2x=26
/2. /2
x=13

8 0

3 years ago

Find the surface area of each figure. Round your answers to the nearest hundredth, if necessary

jeyben [28]

Answer:

Step-by-step explanation:

7 0

3 years ago

Calculate ZQRP 12 cm Р R 18 cm

gladu [14]

Answer:

<QRP = 48.2°

Step-by-step explanation:

Given:

PR = 18 cm

QR = 12 cm

Required:

<QRP = angle R

Solution:

Reference angle = <R (<QRP)

Adjacent side length = 12 cm

Hypotenuse = 18 cm

Thus:

Cos (R) = 12/18

cos (R) = 0.6667

$R = Cos^{-1}(0.6667)$

$R = 48.1871227$

<QRP = 48.2° (nearest tenth)

8 0

3 years ago

4680 walls in 3 days and 6 hours how many watts does it consume per day

Salsk061 [2.6K]

1440 W

Step-by-step explanation:

3.25=4680

1=X

X=1*4680/3.25

X=1440

8 0

3 years ago